Wood basic density effect of Eucalyptus grandis in the paper making

Cremonez, Victor Gonçalves; Júnior, Eraldo Antonio Bonfatti; Andrade, Alan Sulato de; Silva, Eliane Lopes da; Klitzke, Ricardo Jorge; Klock, Umberto

doi:10.1590/s1517-707620190003.0735

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…Cremonez [37] and Magaton [38] presented values of SWC for Eucalyptus grandis and Eucalyptus urophylla between 3.6 and 4.6 m 3 wood /ton pulp , which are tendentially higher than the values observed here with the exception of that of A. longifolia.…”

Section: Fiber Propertiescontrasting

confidence: 74%

Encouraging Invasive Acacia Control Strategies by Repurposing Their Wood Biomass Waste for Pulp and Paper Production

Neiva,

Godinho,

Simões

et al. 2024

Forests

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Concerns on the expanding infestation of several Acacia species in the southern Mediterranean European countries have triggered an ever-growing requirement for costly targeted control actions. Valorizing biomass waste produced could help promote and better finance these actions. For that purpose, wood wastes from invasive control actions were tested regarding their pulp and paper potential, aiming to entice cellulose industries to partake in future conservation actions. Wood waste from the five most pervasive Acacia species was studied (Acacia dealbata Link, Acacia longifolia Willd, Acacia mearnsii De Wild, Acacia melanoxylon R.Br, and Acacia saligna Labill) regarding physical and chemical characteristics, and a central composite design was used to optimize alkali charge and reaction temperature on pulping yield and delignification. Bleached kraft pulps were produced with each species’ optimized conditions and for an equitable mixture of all species. Optimized pulp yields (52.6%–53.5%) and pulp polymerization degree (2867–3690) of Acacia species were higher than those of Eucalyptus globulus Labill (used as reference). Optimized bleached pulps were refined and fiber, pulp, and handsheet properties determined. Acacia dealbata and A. longifolia presented high specific wood consumption and lower handsheet strength properties, pointing to overall lower pulping potential, while A. melanoxylon and A. mearnsii characteristics were equal to or higher than those of E. globulus. A. saligna pulp and handsheet characteristics appear more suited for tissue paper. The Acacia mixture achieved acceptable characteristics, enabling the indiscriminate use of Acacia wood regardless of the species. As a shortcoming, the Acacia pulps showed the worst optical characteristics, with brightness dropping substantially with beating (64%–76%) when compared to E. globulus (81%).

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Section: Fiber Propertiescontrasting

confidence: 74%

Encouraging Invasive Acacia Control Strategies by Repurposing Their Wood Biomass Waste for Pulp and Paper Production

Neiva,

Godinho,

Simões

et al. 2024

Forests

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“…VIEIRA, W.L. et al Corymbia citriodora wood for pulp and paper Studying the effect of E. grandis wood density on papermaking, Cremonez et al (2019) concluded that increase in wood density did not promote variations in pulp yield, considering the same cooking conditions. However, denser wood had lower specific consumption, making it difficult to ignite and, hence, impairing selectivity of the pulping process.…”

Section: Discussionmentioning

confidence: 99%

WOOD POTENTIAL OF 33-YEAR-OLD Corymbia citriodora FOR PULP AND PAPER IN THREE SOIL TYPES

Vieira,

Longui,

Amorim

et al. 2020

Rev. Inst. Florest.

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The pulp and paper industry is important to the Brazilian economy. In the present study, we investigated Corymbia citriodora wood in three soil types: Quartzarenic Neossol, Red Latosol and Red Nitosol. We aimed to determine how differences in physical, chemical and water-holding capacity among these three types of soils can cause changes in wood density and anatomical ratios in C. citriodora wood, important parameters in the production of pulp and paper. We used standard techniques in the methodology. Soil types did infuence wood quality and could be used as a factor in considering the fnal quality of the product. Corymbia citriodora wood have not previously been considered for use in paper/pulp production. However, if we consider wood density as a key factor, wood from Red Nitosol - NV trees can be used since lower basic densities were identifed and are most appropriate for the production of printing and writing paper, owing to fber features. Otherwise, woods from Quartzarenic Neossol - RQ and Red Latosol - LV trees are more suitable for absorbent paper (tissue). We found that more clayey soil promotes lower basic density, and NV soil was found to be the most clayey of the studied soils. Based on nutritional information from soil, it appears that wood from LV soil trees would be the most suitable for present fewer problems in production. However, to be sure of this tentative conclusion, the contents of these nutrients would have to be analyzed in wood ash.

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“…Eucalyptus urophylla had the highest wood basic density, with a mean value of 440.2 kg/m 3 . Previously, Cremonez et al (2019) reported that wood density ranged from 381 kg/m 3 to 436 kg/m 3 for eucalyptus tree species. da Silva et al ( 2017) found that hybrid urograndis had an average tree basic density of 400 kg/m 3 at 34 months and 420 kg/m 3 at 62 months old.…”

Section: Wood Basic Density Distributionmentioning

confidence: 99%

Non-destructive modeling using a drilling resistance tool to predict wood basic density of standing trees in a eucalypts plantation in North Sumatra, Indonesia

et al. 2023

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Abstract. Singh KP, Siregar IZ, Abad JIM, Karlinasari L. 2022. Non-destructive modeling using a drilling resistance tool to predict wood basic density of standing trees in a eucalypts plantation in North Sumatra, Indonesia. Biodiversitas 23: 6218-6226. Eucalypts are globally selected as the main tree species for pulp and paper industries owing to their good potential growth and wood traits. Wood basic density, which is related to wood biomass yield, is one of the most important wood traits for pulp production and has become a focus in the tree improvement program. Evaluation of this trait in the field is needed to efficiently develop tree improvement programs. The aims of this study were to determine the distribution of basic density in the vertical direction of standing trees, including Eucalyptus grandis, Eucalyptus urophylla, and E. grandis × E. urophylla hybrid (commonly called “urograndis”), and to develop a model for predicting wood basic density using micro-drilling resistance tools of ResistographÒ. The results showed that basic density traits varied within individual trees and within and between species. Average whole tree basic wood densities of 379.9 kg/m3, 400.5 kg/m3, and 440.6 kg/m3 were found for E. grandis, hybrid urograndis, and E. urophylla at 44 months old, respectively. The model developed had a good correlation for predicting wood basic density at 1.3 m height and whole tree basic density, with the R2 for model calibration ranging from 0.52 to 0.76 for 1.3 m wood basic density prediction and from 0.62 to 0.79 for whole tree wood basic density. This study found that the three species of eucalyptus could be used to create a combined model for predicting wood basic density that could be used for each individual species. The model for single and multiple species had a good validation with R2 from 0.51 to 0.72.

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Wood basic density effect of Eucalyptus grandis in the paper making

Cited by 6 publications

References 16 publications

Encouraging Invasive Acacia Control Strategies by Repurposing Their Wood Biomass Waste for Pulp and Paper Production

Encouraging Invasive Acacia Control Strategies by Repurposing Their Wood Biomass Waste for Pulp and Paper Production

WOOD POTENTIAL OF 33-YEAR-OLD Corymbia citriodora FOR PULP AND PAPER IN THREE SOIL TYPES

Non-destructive modeling using a drilling resistance tool to predict wood basic density of standing trees in a eucalypts plantation in North Sumatra, Indonesia

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